91797625 has 8 divisors (see below), whose sum is σ = 114563592. Its totient is φ = 73438000.

The previous prime is 91797613. The next prime is 91797649. The reversal of 91797625 is 52679719.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 251001 + 91546624 = 501^2 + 9568^2 .

It is not a de Polignac number, because 91797625 - 2⁵ = 91797593 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367066 + ... + 367315.

It is an arithmetic number, because the mean of its divisors is an integer number (14320449).

Almost surely, 2^91797625 is an apocalyptic number.

It is an amenable number.

91797625 is a deficient number, since it is larger than the sum of its proper divisors (22765967).

91797625 is an equidigital number, since it uses as much as digits as its factorization.

91797625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734396 (or 734386 counting only the distinct ones).

The product of its digits is 238140, while the sum is 46.

The square root of 91797625 is about 9581.1077125769. The cubic root of 91797625 is about 451.1044885505.

The spelling of 91797625 in words is "ninety-one million, seven hundred ninety-seven thousand, six hundred twenty-five".